# 内置函数
# 技巧：多利用 help() 方法
import random

a = -12
print(a)
print(abs(a))
print("parting line".center(30, "="))

b = []
for i in range(10):
    b.append(random.randint(1,100))
print(b)
print(max(b))
print("parting line".center(30, "="))

ran_num = int(input("Please input a number of integer:"))
c = 12
d = c + ran_num
